171. (1) Every Police Officer shall arrest any person who commits, within his view, any offence against this Act or any ¹[rule or regulation] made hereunder, if the name and address of such person be unknown to him, and if such person, on demand declines to give his name and address, or gives a name or address which such officer has reason to belive to be false. (2) No person so arrested shall be detained in custody after his true name and address are ascertained, or without the order of a Magistrate, for any longer time, not exceeding at the most twenty-four hours from the arrest, than is necessary for bringing him before a Magistrate. (3) On the written application of the Chairman, any Police Officer above the rank of constable shall arrest any person who obstructs any employee of the Kartripakkha in the exercise of any of the powers conferred by this Act or any ²[rule or regulation] made hereunder.